South is at a basal step [Pic]. The north-eastern and south-western lunisticeLunistices are the most northerly and southerly moons of the month. The lunar equivalent of solstices - more. zones span the dips at either end of the valley. South-eastern and north-western lunisticesLunistices are the most northerly and southerly moons of the month. The lunar equivalent of solstices - more. span hilltops. The highest hill is a half-month before spring equinox. North is on the last minor top of a ridge [Pic].
The north-eastern lunisticeLunistices are the most northerly and southerly moons of the month. The lunar equivalent of solstices - more. zone spans a dip that seems to have summer cross-quarter / solstice midpoint at its bottom. Lunar major standstillLunistice positions vary cyclically over an 18.6 year period but are fairly static for more than a year at either end of the range is at the top of a slope. Minor standstillLunistice positions vary cyclically over an 18.6 year period but are fairly static for more than a year at either end of the range appears to be at a slight break between two ridge sections.
The eastern ridge is close enough to have been under total control. Its highest hill has summer cross-quarter at its northern foot and winter cross-quarter at the southern one. The top is a half-month before spring equinox / after autumn equinox.
To the south-east, winter cross-quarters are at the foot of a rise that has lunar minor standstillLunistice positions vary cyclically over an 18.6 year period but are fairly static for more than a year at either end of the range on its top. Major standstillLunistice positions vary cyclically over an 18.6 year period but are fairly static for more than a year at either end of the range is on the next top. Subtle though they are.
Orientation of tomb and passage is towards the end of the solar sequence and the winter solstice sun is well known to shine into the passage now.
The passage axis was assessed independently of the general tomb-top survey. An azimuth of about 137° has prehistoric winter solstice approximately central. Originally the sun would have shone into the passage for about a month, thus defining the period during which a solstitial full moon must occur.
Modern solstice is at a horizon position that would have been about 11 days from the solstice in neolithic times.
The minor half of the south-western lunisticeLunistices are the most northerly and southerly moons of the month. The lunar equivalent of solstices - more. zone spans a section of far horizon. From cross-quarter at one side to lunar midpoint at the other. The major half is on slightly nearer ground with lunisticesLunistices are the most northerly and southerly moons of the month. The lunar equivalent of solstices - more. setting into a hilltop at major standstillLunistice positions vary cyclically over an 18.6 year period but are fairly static for more than a year at either end of the range.
The western ridge is slightly further away than the eastern one but still well within controllable territory. Winter cross-quarters are indicated by the intersect of near and far. Equinox / cross-quarter midpoints, both winter and summer are at the bottom of steps.
The north-western lunisticeLunistices are the most northerly and southerly moons of the month. The lunar equivalent of solstices - more. zone spans a rise which has the summer cross-quarter / solstice midpoint at its high point. Lunar minor eighth and major standstillLunistice positions vary cyclically over an 18.6 year period but are fairly static for more than a year at either end of the range are at dips.
- West Kennet Long Barrow is the only other Long Barrow that has been surveyed so far.
- The only other surveyed british monuments are Sites in Wales.
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